68 lines
2.7 KiB
ArmAsm
68 lines
2.7 KiB
ArmAsm
/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Header: sigprocmask.s,v 1.1 91/07/06 13:06:01 torek Exp
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* $Id: sigprocmask.s,v 1.1 1993/10/07 00:22:27 cgd Exp $
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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.asciz "@(#)sigprocmask.s 8.1 (Berkeley) 6/4/93"
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#endif /* LIBC_SCCS and not lint */
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#include "SYS.h"
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/*
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* sigprocmask(int how, sigset_t *set, sigset_t *oset)
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*/
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ENTRY(sigprocmask)
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tst %o1 ! set == NULL?
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bne,a 1f ! if not,
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ld [%o1], %o1 ! replace it in %o1 with *set
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! clr %o1 ! else block no signals ...
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mov 1, %o0 ! ... using sigprocmask(SIG_BLOCK)
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1:
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mov SYS_sigprocmask, %g1
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t ST_SYSCALL
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bcc 2f ! if success,
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tst %o2 ! check to see if oset requested
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ERROR()
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2:
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bne,a 3f ! if oset != NULL,
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st %o0, [%o2] ! *oset = oldmask
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3:
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retl ! in any case, return 0
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clr %o0
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